All categories

3 years ago

(a + b)² = a² + 2ab + b2 with step by step explanation

Mathematics

1 answer:

Dahasolnce [82]3 years ago

3 0

Step-by-step explanation:

Given: (a+b)²

To prove: (a+b)² = a² + 2ab + b²

Proof:-

(a+b)² = (a+b)(a+b)

(a+b)²=a(a+b)+b(a+b)

(a+b)² = a²+ab+ab+b²

(a+b)² = a²+2ab+b².

You might be interested in

Can some one help me in this problem

strojnjashka [21]

I believe x=116 and z=26. 4z-40=64
4z=104
z=26
180-64=116

8 0

3 years ago

hello hello the area of a triangle is 32 square in the height of the triangle is 8 in what is the length of the base of a triang

solniwko [45]

As we know
area of triangle = 1/2 *height*base
32=1/2*8*base
32=4*base
8 =base

3 0

3 years ago

Read 2 more answers

The Diaz family bought 7 bags of cookies. Each bag had 14 cookies. They have since eaten 29 of the cookies. How many cookies do

saveliy_v [14]

Answer:

They have 69 cookies left.

Step-by-step explanation:

7 x 14 = 98

98 - 29 = 69

6 0

3 years ago

Evacuation and emergency procedures should be displayed in the classroom lab/office. * 4 points True False

Vladimir [108]

Answer:

The answer is true. I hope this helps

4 0

3 years ago

Read 2 more answers

Use a paragraph, flow chart, or two-column proof to prove the angle congruency. Given: ∠ CXY ≅ ∠ BXY

Llana [10]

Answer:

See explanation

Step-by-step explanation:

Consider triangles CAX and BAX. In these triangles,

$\overline{AC}\cong \overline{AB}$ - given
$\angle CAX\cong \angle BAX$ - given
$\overline{AX}\cong \overline{AX}$ - reflexive property

By SAS postulate, $\triangle CAX\cong \triangle BAX$

Congruent triangles have conruent corresponding parts. So,

$\overline{CX}\cong \overline{BX}$

Consider triangles CXY and BXY. In these triangles,

$\overline{CX}\cong \overline{BX}$ - proven
$\angle CXY\cong \angle BXY$ - given
$\overline{XY}\cong \overline{XY}$ - reflexive property

By SAS postulate, $\triangle CXY\cong \triangle BXY$

Congruent triangles have conruent corresponding parts. So,

$\angle XCY\cong \angle XBY$

5 0

3 years ago

(a + b)² = a² + 2ab + b2 with step by step explanation​

(a + b)² = a² + 2ab + b2 with step by step explanation